There where question on YouTube that could Mini Fairing be used with KTM 690 windscreen.
Here are some images about that option.
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So basically it could be used like this but it might be difficult to get straps on that are holding mask in place.
I might go with option just to buy Mini fairing support and then make small addition to create extra shield using some
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Though even like this it might be that it goes too much up and its hard to see speedometer.
Of course I have TAB 3 mount here so if you are not using such big navigator it might not come an issue.